The slug enters

In the dark heart of Gotham, the Batcave lay, a shadowed cavern nestled beneath the foundations of Wayne Manor. But now, it was no longer the domain of the bat alone, for within its depths, the Brain Parasite, like a sinister moth, had descended from the darkness above.

It was a slimy, little thing just 3 cm long.From the outside it looked just like an ugly and disgusting green slug with small nubs dotting its body.However this creature wasn't even from Earth so it was anything but ordinary.

I know what you're thinking i think I saw this in like every alien invasion movie ever,however the slug turns its host into a huge slut,so it's like every tentacle hentai ever.

The slug was moving with purpose as it had sensed a potential host nearby and was currently crowling on a rooftop to reach her.

The host in question Kate Kane also known as Batwoman was currently in the Bat cave.